Archive Animal Disease

Panosteitis DEFINITION A self-limiting, painful condition affecting one or more of the long bones of young, medium- to large-breed dogs that is characterized clinically by lameness and radiographically by high density of the marrow cavity.   PATHOPHYSIOLOGY Cause unknown. Attempts ...

Panniculitis /Steatitis   Panniculitis is a term that describes inflammation of the fat-containing tissues just under the skin. An uncommon condition, it’s been identified as a problem in dogs when bacteria, fungi or other organisms infect this area   SYSTEMS ...

Pancytopenia Simultaneous leukopenia, nonregenerative anemia, and thrombocytopenia; not a disease itself—rather, a group of laboratory findings that can result from multiple causes.   PATHOPHYSIOLOGY Mechanisms may include decreased production of cells in the bone marrow or increased peripheral use, destruction, ...

Rotavirus Infections   Rotavirus Infections is a non-enveloped, double-stranded RNA virus; rota (Latin; “wheel”) for shape of the capsid; genus within the family Reoviridae; relatively resistant to environmental destruction (acid and lipid solvents); unique double capsid protects virus from inactivation ...

Pancreatitis—Dogs   Inflammation of the pancreas most often of unknown cause(s). Acute pancreatitis—inflammation of the pancreas that occurs abruptly with little or no permanent pathologic change. Chronic pancreatitis—continuing inflammatory disease that is accompanied by irreversible morphologic change such as fibrosis ...

Pancreatitis—Cats Cats can suffer from two forms of pancreatitis: acute and chronic. Clinical signs can be similar for either form but tend to come on more rapidly and are more severe in cats with acute pancreatitis. The most common clinical ...

Vascular Ring Anomalies   Right Aortic Arch Entrapment of the esophagus by a persistent right fourth aortic arch on the right and dorsally, the base of the heart and pulmonary artery ventrally, and ductus or ligamentum arteriosum on the left ...

Roundworms (Ascariasis) Ascariasis caused by Toxocara canis (dogs), T. cati (cats), and Toxascaris leonina (dogs and cats); Baylisascaris (raccoons) can infect dogs and cause neurocysticercosis in people. Transplacental transmission of T. canis larvae from bitch’s tissues to pups causes prenatal ...

Rectal and Anal Prolapse   Rectal and Anal Prolapse – eversion of one or more layers of the rectum through the anus.  An anal prolapse (incomplete prolapse) is a protrusion of anorectal mucosa through the external anal orifice. A rectal ...

Q Fever   Q Fever is caused by the zoonotic rickettsia Coxiella burnetii. Infection—most commonly by inhalation or ingestion of organisms while feeding on infected body fluids (urine, feces, milk, or parturient discharges), tissues (especially placenta), or carcasses of infected ...